<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div class="container1">
        <button>按钮一</button>
        <button>按钮二</button>
        <button>按钮三</button>
        <div>111</div>
        <div>222</div>
        <div>333</div>
    </div>

    <div class="container2">
        <button>按钮一</button>
        <button>按钮二</button>
        <button>按钮三</button>
        <div>111</div>
        <div>222</div>
        <div>333</div>
    </div>
    <!-- 第二个选项卡 可以自动切换 -->

    <div class="container3">
        <button>按钮一</button>
        <button>按钮二</button>
        <button>按钮三</button>
        <div>111</div>
        <div>222</div>
        <div>333</div>
    </div>
    
    <!-- 下一个按钮  -->
</body>
</html>